All names: Gaia DR3 6620341754892046976, Gaia DR2 6620341754892046976, 2QZ J223138.8-291706, Gaia EDR3 6620341754892046976, GALEX J223138.8-291705
| Parameter | Unit | Gaia EDR3 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 22 31 38.87 (0.2) | 22 31 38.87 (0.2) | ||
| Declination | -29 17 06.27 (0.2) | -29 17 06.02 (0.2) | ||
| Spectral type | DB | |||
| Effective temperature | [K] | |||
| log(g) | [cgs] | |||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 2.94 (0.3) | 2.94 (0.3) | |
| Distance | [pc] | 339.62 (30) | 339.62 (30) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -3.145 (0.2) | -3.145 (0.2) | |
| Proper motion (declination) | [mas/yr] | -15.617 (0.2) | -15.617 (0.2) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | ||||
| H magnitude | ||||
| K magnitude | ||||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 18.87 (0.004) | 18.87 (0.004) | ||
| BP magnitude | 18.84 (0.04) | |||
| RP magnitude | 19.12 (0.06) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.011 | |||
* Constant surface field
Spectra without link are available upon request
The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour (Université de Montréal) and Dr. Simon Blouin (University of Victoria). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.